WO2008147776A1 - Common mode filter system and method for a solar power inverter - Google Patents
Common mode filter system and method for a solar power inverter Download PDFInfo
- Publication number
- WO2008147776A1 WO2008147776A1 PCT/US2008/064263 US2008064263W WO2008147776A1 WO 2008147776 A1 WO2008147776 A1 WO 2008147776A1 US 2008064263 W US2008064263 W US 2008064263W WO 2008147776 A1 WO2008147776 A1 WO 2008147776A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- power
- inverter
- distribution system
- array
- damping
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/123—Suppression of common mode voltage or current
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Definitions
- TITLE COMMON MODE FILTER SYSTEM AND METHOD FOR A SOLAR POWER
- This invention relates generally to apparatus and methods for converting solar energy to electrical energy, and more specifically to apparatus and methods for more efficient conversion of solar energy to electrical energy.
- inverters In photovoltaic (PV) energy systems, inverters are used to convert DC electrical energy that is generated by photovoltaic panels to AC electrical energy that is compatible with the AC distribution systems that are built into the infrastructure of residential, commercial, industrial premises, and large ground mounted solar farms.
- PV photovoltaic
- an inverter is hard grounded (e.g., on the negative rail of the inverter DC input) and an isolation transformer is utilized in connection with the inverter to galvanically isolate the inverter from the AC power system of the premises and to provide a voltage ratio change.
- Transformers add additional inefficiencies, complexity, weight and substantial cost to inverters.
- For inverter applications large enough to warrant a dedicated connection to the utility e.g., a utility transformer connecting the inverter to the utility's own medium voltage supply), it is often possible to remove the integrally provided transformer from the product.
- inverters Although purchased as “transformerless,” the operation of such inverters is still predicated on the presence of an isolating transformer to allow for the traditionally hard-grounded PV array configuration.
- inverters have been marketed as being “transformerless” because, when sold, a transformer is not integrated with these inverters, the power distribution system (e.g., 480/277 VAC) of the premises is still isolated from the inverter by a utility transformer.
- these "transformerless” inverters still rely on a transformer for isolation and are typically limited to installations where medium voltage (e.g., 4160 to 13KV) transformers are present at the premises.
- the invention may be characterized as a photovoltaic system that includes a photovoltaic array, a distribution system that distributes power within a premises of a demand-side energy consumer, an inverter coupled to the distribution system that is configured to convert DC power from the photovoltaic array to AC power and apply the AC power to the distribution system, a damping portion configured to damp high frequency voltages derived from the inverter, and trapping circuitry coupled to the damping portion that is configured to reduce a level of low frequency current traveling through the damping portion.
- the invention may be characterized as a power conversion device.
- the power conversion device in this embodiment comprises inputs adapted to receive DC power, an inverter portion configured to convert the DC power to AC power, outputs adapted to apply the AC power to a distribution system of a premises of a demand-side energy consumer, a damping portion configured to damp high frequency voltages derived from the inverter so as to enable the inverter portion to couple with the distribution system without an isolation transformer, and a trapping portion that is configured to reduce a level of low frequency current traveling through the damping circuit.
- the invention may be characterized as a method for applying power to a distribution system of a premises of a demand-side energy consumer.
- the method in this embodiment includes generating DC power from a renewable source of energy, converting the DC power to AC power, applying the AC power directly to the distribution system of the premises, and filtering high frequency voltages so as to reduce an amount of high frequency voltages propagating to the distribution system and the PV array.
- FIG. 1 is a block diagram depicting an exemplary embodiment of a photovoltaic system
- FIG. 2 is a schematic representation of an exemplary embodiment of the inverter described with reference to FIG. 1 ;
- FIG. 3 is a schematic representation of an embodiment that may be utilized in connection with the embodiments described with reference to FIGS. 1 and 2;
- FIG. 4 is a schematic representation of another embodiment that may be utilized in connection with the embodiments described with reference to FIGS. 1 and 2;
- FIG. 5 is a block diagram depicting an exemplary inverter-system architecture;
- FIG. 6 is a flowchart depicting an exemplary method that may be carried out in connection with the embodiments discussed with reference to FIGS. 1-5.
- FIG. 1 shown is a block diagram an exemplary embodiment of the present invention.
- a first set 102 and a second set 104 of photovoltaic panels are arranged to create a bipolar panel array 106 that is coupled to an inverter 108, which is disposed between the panel array 106 and a distribution system 110.
- the distribution system 110 in this embodiment is coupled to the secondary side of a wye-configured medium-voltage to 480/277 three-phase transformer 112 that is grounded at its star point.
- FIG. 1 The illustrated arrangement of the components depicted in FIG. 1 is logical and not meant to be an actual hardware diagram; thus, additional components can be added or combined with the components that are depicted in an actual implementation. It should also be recognized that the components, in light of the disclosure herein, may be readily implemented by one of ordinary skill in the art.
- the inverter 108 is depicted as coupling directly to the array 106, but this is certainly not required.
- a PV interface is interposed between the array 106 and the inverter 108.
- the PV interface generally operates to enable the inverter 108, which is designed to operate at lower voltages, to be utilized in connection with the PV array 106 that operates at least a portion of the time (e.g., while unloaded) at a voltage that exceeds the designed operating voltage of the inverter 108.
- U.S. Application No. 11/967,933 entitled Photovoltaic Inverter Interface Device, System and Method, which is incorporated herein by reference discloses exemplary PV interfaces that may be utilized in connection with one or more embodiments of the present invention.
- the photovoltaic array 106 converts solar energy to DC electrical power, which is converted to AC power (e.g., three-phase power) by the inverter 108.
- AC power e.g., three-phase power
- the AC power output by the inverter 108 is applied to the distribution system HO 5 which in many embodiments is the three phase distribution system of a demand-side energy consumer (e.g., a commercial entity, industrial entity, or collection of residential units).
- the distribution system 110 is a portion of a utility distribution system.
- the transformer 112 in the exemplary embodiment is configured to couple the distribution system 110 to medium voltage power provided by an electrical utility company.
- the cells in the array 106 include crystalline (e.g., monocrystalline or polycrystalline) silicon that operates in an open load state at 1200 Volts and operates in a loaded state between 660 and 960 Volts. And in other embodiments the array includes cells comprising amorphous silicon that operates in an open load state at 1400 Volts and a loaded state around 900 Volts.
- the photovoltaic array 102 may include a variety of different type photovoltaic cells that are disposed in a variety of different configurations. For example, the photovoltaic cells may be arranged in parallel, in series or a combination thereof.
- the first set of panels 102 and the second set of panels 104 are tied together, and as shown, in some embodiments, the first and second sets of panels 102, 104 are tied together outside of the inverter 108.
- a line (not shown) sized for relatively low currents will couple, via a fuse, the tie point 114 between the first and second sets of panels 102, 104 to ground during nighttime. This connection would be made by a relay and therefore reference the array in the conventional manner when it is not producing power.
- first and second sets of panels 102, 104 are tied together within the inverter 108 via a normally open switch that is closed during operation of the inverter 108.
- the embodiment depicted in FIG. 1 unlike typical approaches, does not include a separate isolation transformer between the inverter 108 and the distribution system 110, and as a consequence, efficiency of the system is increased while the cost, size, and weight of the inverter 108 are decreased.
- multiple inverters may be placed side by side without an isolation transformer. And beneficially, the number of inverters that may be placed side by side is virtually unlimited, and the inverters may be placed in a convenient location (e.g., away from an entry point of utility power to a building).
- the inverter in this embodiment includes a ground fault portion, disconnect contactor, surge protection, a common mode choke, an inverter portion, line reactors, AC contactor, and EMI filter aligned in series.
- a drive board is shown coupled between the inverter and a control computer, and the control computer is coupled to an inverter interface that includes a front door interface, a data reporting computer, and Ethernet interface and a wireless interface.
- the common mode choke is located on the DC side of the converter, but this is not required, and in other embodiments, the common mode choke may be positioned on the AC side of the inverter. It has been found that capacitance of the solar array to ground may cause undesirable instability of the inverter. The addition of filtering components (e.g., common mode choke and other filter components) prevents this undesirable behavior.
- filtering components e.g., common mode choke and other filter components
- the common mode choke in the exemplary embodiment is implemented in connection with damping circuitry to remove the high frequency voltages (e.g., 18 kHz) in connection with low frequency (e.g., 180 Hz) traps to prevent the flow of the 180 Hz voltages through the damping circuitry.
- damping circuitry to remove the high frequency voltages (e.g., 18 kHz) in connection with low frequency (e.g., 180 Hz) traps to prevent the flow of the 180 Hz voltages through the damping circuitry.
- FIG. 3 shown is a schematic representation of a common-mode choke 302 used in connection with damper networks 304 and a parallel resonant tank circuits 306 that operate as traps for 180 Hz voltages that may be used in connection with the embodiments described with reference to FIGS. 1 and 2.
- the damper networks 304 filter the high frequency voltages (e.g., 18 kHz) and the parallel resonance tank circuits 306 operate to create a high impedance for 180 Hz frequencies.
- the damper circuits 304 remove potentially harmful high frequency currents and the parallel resonance tank circuits 306 prevent 180 Hz voltages from creating substantial energy losses by preventing 180 Hz current from flowing through the damper networks 304.
- the capacitor in each of the damper networks 304 may be realized by a 60 microfarad capacitor and the resistor in each of the networks 304 may be implemented with a 50 Ohm resistor.
- the capacitor in the parallel resonance tank circuits 306 may be implemented with a 40 microfarad capacitor and the inductor may be realized by a 19.5 miIHHenry inductor. The combination of the parallel inductor and capacitor act as an open circuit at 180 Hz allowing high frequencies to be attenuated but not dissipating excessive power at 180Hz.
- FIG. 4 shown is a schematic representation of an alternative to the embodiment described with reference to FIG. 3. As shown, this embodiment is substantially the same as the embodiment depicted in FIG. 3, except the parallel resonant tank circuits 306 described with reference to FIG. 3 have been replaced by a single parallel resonant tank circuit 406 that also operates as a trap for 180 Hz voltages.
- the damper networks 404 filter the high frequency voltages (e.g., 18 kHz) and the parallel resonance tank circuit 406 operates to create a high impedance for 180 Hz frequencies using fewer components than the resonance tanks circuits 306.
- N inverters are configured to operate in connection with a single distribution system without requiring the use of isolation transformers.
- a common mode choke e.g., the common mode chokes discussed with reference to FIGS. 2, 3, and 4
- damping networks e.g., damping networks 304, 404
- DC power is initially generated (e.g., from a renewable source of energy such as solar energy captured by the array 106)(BIocks 602, 604), and the DC power is converted to AC power (e.g., by an inverter described with reference to FIGS. 1- 5)(Block 606) before the AC power is applied to a distribution system (e.g., a distribution system for a large residential, commercial, or industrial facility)(Block 608).
- the AC power is directly applied to the distribution system (e.g., without interposing an isolation transformer between the inverter and the distribution system).
- high frequency components that may be generated by the inverter are filtered so as to reduce or prevent the high frequency components that would ordinarily propagate to the source of the DC power (e.g., array 106) or to other devices (e.g., other inverters or electronic devices) that may be coupled to the distribution system (Block 610).
- the filter(s) for the high frequency voltages (Block 612).
- 180 Hz voltages that originate from pulse width modulation saturation may propagate through the high frequency filter, and create substantial energy losses and heat generation.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200880016950A CN101765955A (en) | 2007-05-23 | 2008-05-20 | The common mode filtering system and method that is used for solar inverter |
DE08769535T DE08769535T1 (en) | 2007-05-23 | 2008-05-20 | MATERIAL ACTUATOR SYSTEM AND METHOD FOR A SOLAR ENERGY TRANSMITTER |
JP2010509503A JP5313240B2 (en) | 2007-05-23 | 2008-05-20 | Common mode filter system and method for solar energy inverter |
EP08769535A EP2149184A1 (en) | 2007-05-23 | 2008-05-20 | Common mode filter system and method for a solar power inverter |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US93980707P | 2007-05-23 | 2007-05-23 | |
US60/939,807 | 2007-05-23 | ||
US12/122,950 US9172296B2 (en) | 2007-05-23 | 2008-05-19 | Common mode filter system and method for a solar power inverter |
US12/122,950 | 2008-05-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008147776A1 true WO2008147776A1 (en) | 2008-12-04 |
Family
ID=40072233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2008/064263 WO2008147776A1 (en) | 2007-05-23 | 2008-05-20 | Common mode filter system and method for a solar power inverter |
Country Status (8)
Country | Link |
---|---|
US (1) | US9172296B2 (en) |
EP (1) | EP2149184A1 (en) |
JP (1) | JP5313240B2 (en) |
KR (1) | KR20100017730A (en) |
CN (1) | CN101765955A (en) |
DE (1) | DE08769535T1 (en) |
TW (1) | TW200908501A (en) |
WO (1) | WO2008147776A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10424935B2 (en) | 2009-09-15 | 2019-09-24 | Rajiv Kumar Varma | Multivariable modulator controller for power generation facility |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9172296B2 (en) | 2007-05-23 | 2015-10-27 | Advanced Energy Industries, Inc. | Common mode filter system and method for a solar power inverter |
US7768751B2 (en) * | 2008-01-29 | 2010-08-03 | Advanced Energy Industries, Inc. | System and method for ground fault detection and interruption |
US8294296B2 (en) * | 2007-08-03 | 2012-10-23 | Advanced Energy Industries, Inc. | System, method, and apparatus for remotely coupling photovoltaic arrays |
US8203069B2 (en) * | 2007-08-03 | 2012-06-19 | Advanced Energy Industries, Inc | System, method, and apparatus for coupling photovoltaic arrays |
US20090078304A1 (en) * | 2007-09-26 | 2009-03-26 | Jack Arthur Gilmore | Photovoltaic charge abatement device, system, and method |
US20090217964A1 (en) * | 2007-09-26 | 2009-09-03 | Advanced Energy Industries, Inc. | Device, system, and method for improving the efficiency of solar panels |
US7964837B2 (en) * | 2007-12-31 | 2011-06-21 | Advanced Energy Industries, Inc. | Photovoltaic inverter interface device, system, and method |
US8461508B2 (en) | 2008-08-10 | 2013-06-11 | Advanced Energy Industries, Inc. | Device, system, and method for sectioning and coupling multiple photovoltaic strings |
US7619200B1 (en) * | 2008-08-10 | 2009-11-17 | Advanced Energy Industries, Inc. | Device system and method for coupling multiple photovoltaic arrays |
US8362644B2 (en) * | 2008-12-02 | 2013-01-29 | Advanced Energy Industries, Inc. | Device, system, and method for managing an application of power from photovoltaic arrays |
ES2509142T5 (en) * | 2009-05-26 | 2018-06-04 | Sma Solar Technology Ag | Surge protection for converters with EMV input filter |
DE102009049036A1 (en) * | 2009-10-11 | 2011-04-14 | Tebbe, Kornelia | Connection unit for use in a solar farm |
US7990743B2 (en) * | 2009-10-20 | 2011-08-02 | General Electric Company | System and method for decreasing solar collector system losses |
US7855906B2 (en) | 2009-10-26 | 2010-12-21 | General Electric Company | DC bus voltage control for two stage solar converter |
US8916811B2 (en) * | 2010-02-16 | 2014-12-23 | Western Gas And Electric Company | Integrated electronics housing for a solar array |
US8050062B2 (en) | 2010-02-24 | 2011-11-01 | General Electric Company | Method and system to allow for high DC source voltage with lower DC link voltage in a two stage power converter |
US8643985B2 (en) | 2010-07-23 | 2014-02-04 | Schneider Electric Solar Inverters Usa, Inc. | Photovoltaic bipolar to monopolar source circuit converter with frequency selective grounding |
EP2671311A1 (en) * | 2011-02-04 | 2013-12-11 | Hyundai Heavy Industries Co., Ltd. | Method and circuits for common mode current depression in 3 phase transformerless pv inverter |
US8937822B2 (en) | 2011-05-08 | 2015-01-20 | Paul Wilkinson Dent | Solar energy conversion and utilization system |
US11460488B2 (en) | 2017-08-14 | 2022-10-04 | Koolbridge Solar, Inc. | AC electrical power measurements |
US11901810B2 (en) | 2011-05-08 | 2024-02-13 | Koolbridge Solar, Inc. | Adaptive electrical power distribution panel |
CN102684257A (en) * | 2012-05-03 | 2012-09-19 | 友达光电股份有限公司 | Solar system, solar module and power supply method |
GB2501899A (en) * | 2012-05-09 | 2013-11-13 | Itouchenergy Ltd | Solar cell module and systems |
DE102012109638A1 (en) * | 2012-10-10 | 2014-05-15 | Sma Solar Technology Ag | Multi-string inverter with input-side EMC filter |
KR102258200B1 (en) * | 2019-10-07 | 2021-06-02 | 이엠코어텍 주식회사 | Current Compensation System for Solar Generators |
US20230344336A1 (en) * | 2019-10-07 | 2023-10-26 | Em Coretech Inc. | Current compensation system for photovoltaic generator, quality measurement device, measurement method thereof, and recording medium thereof |
US11095202B1 (en) | 2020-06-16 | 2021-08-17 | Ge Aviation Systems Llc | Method and apparatus for common-mode voltage cancellation |
CN113783164B (en) * | 2021-09-06 | 2022-12-02 | 麦田能源有限公司 | Control method for three-phase photovoltaic grid-connected inverter relay closing time sequence |
Family Cites Families (87)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2513471A1 (en) * | 1975-03-26 | 1976-04-22 | Braun Ag | CIRCUIT ARRANGEMENT FOR SWITCHING OFF A CHOPPER |
US3986097A (en) * | 1975-06-30 | 1976-10-12 | Bell Telephone Laboratories, Incorporated | Bilateral direct current converters |
US4025862A (en) * | 1975-12-04 | 1977-05-24 | La Telemecanique Electrique | Power supply with chopping circuit |
US4054827A (en) * | 1976-04-12 | 1977-10-18 | The United States Of America As Represented By The Secretary Of The Army | Voltage boost circuit for DC power supply |
US4128793A (en) * | 1977-07-25 | 1978-12-05 | Allis-Chalmers Corporation | Power circuit for variable frequency, variable magnitude power conditioning system |
US4161023A (en) * | 1977-09-07 | 1979-07-10 | The United States Of America As Represented By The United States Department Of Energy | Up-and-down chopper circuit |
US4531085A (en) * | 1983-06-13 | 1985-07-23 | Power Distribution Inc. | Polyphase line voltage regulator |
US4768096A (en) * | 1984-05-04 | 1988-08-30 | Energy Conversion Devices, Inc. | Contact-type portable digitizing wand for scanning image-bearing surfaces |
FR2576722B1 (en) * | 1985-01-25 | 1987-04-30 | Centre Nat Etd Spatiales | DIRECT CURRENT SUPPLY WITH ADJUSTABLE OPERATING POINT |
DE3606462A1 (en) * | 1986-02-28 | 1987-09-03 | Leybold Heraeus Gmbh & Co Kg | INVERTER WITH A DC VOLTAGE PART AND A CHOPPER PART |
JPH0525890A (en) | 1991-07-24 | 1993-02-02 | Sanyo Electric Co Ltd | Generating device by solar battery |
US5270636A (en) * | 1992-02-18 | 1993-12-14 | Lafferty Donald L | Regulating control circuit for photovoltaic source employing switches, energy storage, and pulse width modulation controller |
JPH06252434A (en) | 1993-02-24 | 1994-09-09 | Toyota Motor Corp | Photovoltaic cell apparatus |
JPH0749721A (en) | 1993-08-09 | 1995-02-21 | Sanyo Electric Co Ltd | Protection device for electric apparatus using solar battery as power supply |
US5451962A (en) * | 1994-08-26 | 1995-09-19 | Martin Marietta Corporation | Boost regulated capacitor multiplier for pulse load |
JP3245504B2 (en) | 1994-09-27 | 2002-01-15 | シャープ株式会社 | Inverter device |
JPH08167822A (en) | 1994-12-13 | 1996-06-25 | Nemic Lambda Kk | Harmonic current suppressor |
JP3386295B2 (en) | 1995-08-11 | 2003-03-17 | シャープ株式会社 | Interconnected power converter |
US5781419A (en) * | 1996-04-12 | 1998-07-14 | Soft Switching Technologies, Inc. | Soft switching DC-to-DC converter with coupled inductors |
KR100205229B1 (en) * | 1996-05-15 | 1999-07-01 | 윤종용 | The source for solar cells |
JP3630854B2 (en) | 1996-06-24 | 2005-03-23 | 三洋電機株式会社 | Grid-connected power supply system |
JPH10229679A (en) | 1997-02-18 | 1998-08-25 | Mitsubishi Electric Corp | Inverter device linked to system |
US5923100A (en) * | 1997-03-31 | 1999-07-13 | Lockheed Martin Corporation | Apparatus for controlling a solar array power system |
JPH1141912A (en) * | 1997-07-11 | 1999-02-12 | Sanyo Electric Co Ltd | Inverter circuit |
JPH11251615A (en) * | 1998-03-03 | 1999-09-17 | Canon Inc | Photovoltaic power generation system with snow melting function |
JP3406512B2 (en) | 1998-03-27 | 2003-05-12 | 株式会社荏原電産 | Control method and control device for inverter device |
US6115273A (en) * | 1998-07-09 | 2000-09-05 | Illinois Tool Works Inc. | Power converter with low loss switching |
JP2000295786A (en) | 1999-04-02 | 2000-10-20 | Toshiba Fa Syst Eng Corp | Connection of inverter unit utilizing solar battery |
JP4293673B2 (en) | 1999-04-20 | 2009-07-08 | 三洋電機株式会社 | Operation method of power supply system having a plurality of inverters |
JP2000324852A (en) | 1999-05-14 | 2000-11-24 | Sanyo Electric Co Ltd | Current type inverter for photovoltaic power generation |
JP2000358370A (en) | 1999-06-14 | 2000-12-26 | Densei Lambda Kk | Multi-output stabilized dc power supply |
JP2001068706A (en) | 1999-08-25 | 2001-03-16 | Sanyo Electric Co Ltd | Solar cell device |
US6266260B1 (en) * | 1999-09-03 | 2001-07-24 | Powerware Corporation | Inverter having center switch and uninterruptible power supply implementing same |
US6414866B2 (en) * | 1999-11-15 | 2002-07-02 | Alliedsignal Inc. | Active filter for a converter having a DC line |
JP2001161032A (en) * | 1999-12-01 | 2001-06-12 | Canon Inc | System interconnection power conditioner and power generating system using the same |
US6404655B1 (en) * | 1999-12-07 | 2002-06-11 | Semikron, Inc. | Transformerless 3 phase power inverter |
US6593520B2 (en) * | 2000-02-29 | 2003-07-15 | Canon Kabushiki Kaisha | Solar power generation apparatus and control method therefor |
JP2001275259A (en) * | 2000-03-29 | 2001-10-05 | Canon Inc | Linked system inverter and distributed power generation system |
FR2807882B1 (en) | 2000-04-18 | 2002-05-24 | Centre Nat Rech Scient | ANTI-HOT SPOT DEVICE FOR PHOTOVOLTAIC MODULE AND PHOTOVOLTAIC MODULE PROVIDED WITH SUCH A DEVICE |
FR2819653B1 (en) * | 2001-01-16 | 2003-04-11 | Centre Nat Rech Scient | CONTROL OF A POWER CONVERTER FOR AN AUTOMATIC SEARCH FOR THE MAXIMUM POINT OF POWER |
JP2002233045A (en) * | 2001-02-02 | 2002-08-16 | Canon Inc | Ground detecting device for photovoltaic power generation system and method |
JP3394996B2 (en) * | 2001-03-09 | 2003-04-07 | 独立行政法人産業技術総合研究所 | Maximum power operating point tracking method and device |
JP2002319687A (en) | 2001-04-20 | 2002-10-31 | Furukawa Electric Co Ltd:The | Photovoltaic power generation system having snow- melting function |
US20020170591A1 (en) * | 2001-05-15 | 2002-11-21 | Pharmaseq, Inc. | Method and apparatus for powering circuitry with on-chip solar cells within a common substrate |
JP4829424B2 (en) | 2001-05-31 | 2011-12-07 | キヤノン株式会社 | Solar cell array and photovoltaic power generation system |
JP2003158282A (en) * | 2001-08-30 | 2003-05-30 | Canon Inc | Solar photovoltaic power-generation system |
US7292419B1 (en) * | 2001-09-09 | 2007-11-06 | Nemir David C | Fault interrupter with interchangeable line load connections |
JP2003124492A (en) | 2001-10-18 | 2003-04-25 | Tdk Corp | Solar cell module |
AU2002348084A1 (en) * | 2001-10-25 | 2003-05-06 | Sandia Corporation | Alternating current photovoltaic building block |
US7038333B2 (en) * | 2002-02-15 | 2006-05-02 | The Gillette Company | Hybrid power supply |
FR2837035B1 (en) * | 2002-03-08 | 2005-04-08 | Thales Sa | INTEGRATOR FILTER WITH CONTINUOUS TIME AND MINIMUM PHASE VARIATION, SIGMA-DELTA PASSER MODULE USING SUCH A FILTER |
JP2004015941A (en) | 2002-06-10 | 2004-01-15 | Advantest Corp | Positive/negative dc power supply unit and semiconductor testing device using the same |
JP2004146791A (en) * | 2002-07-31 | 2004-05-20 | Kyocera Corp | Solar power generation device |
US7371963B2 (en) * | 2002-07-31 | 2008-05-13 | Kyocera Corporation | Photovoltaic power generation system |
US6914418B2 (en) * | 2003-04-21 | 2005-07-05 | Phoenixtec Power Co., Ltd. | Multi-mode renewable power converter system |
WO2004100344A2 (en) * | 2003-05-02 | 2004-11-18 | Ballard Power Systems Corporation | Method and apparatus for tracking maximum power point for inverters in photovoltaic applications |
JP2004343909A (en) | 2003-05-16 | 2004-12-02 | Fuji Photo Film Co Ltd | Power supply circuit and electronic equipment |
US7050311B2 (en) * | 2003-11-25 | 2006-05-23 | Electric Power Research Institute, Inc. | Multilevel converter based intelligent universal transformer |
US20050139259A1 (en) * | 2003-12-30 | 2005-06-30 | Robert Steigerwald | Transformerless power conversion in an inverter for a photovoltaic system |
JP4508659B2 (en) * | 2004-01-13 | 2010-07-21 | 三洋電機株式会社 | Inverter for grid connection |
JP4225923B2 (en) | 2004-01-19 | 2009-02-18 | 三洋電機株式会社 | Inverter for grid connection |
KR20050078537A (en) * | 2004-02-02 | 2005-08-05 | 엘지전자 주식회사 | Electro magnetic interference filter |
US7498693B2 (en) * | 2004-02-18 | 2009-03-03 | Diversified Technologies, Inc. | More compact and higher reliability power source system |
KR101042959B1 (en) * | 2004-06-03 | 2011-06-20 | 삼성에스디아이 주식회사 | Solar cell and manufacturing method thereof |
JP4206998B2 (en) | 2004-12-28 | 2009-01-14 | オムロン株式会社 | Power conditioner and its self-diagnosis method |
US8204709B2 (en) * | 2005-01-18 | 2012-06-19 | Solar Sentry Corporation | System and method for monitoring photovoltaic power generation systems |
US7193872B2 (en) * | 2005-01-28 | 2007-03-20 | Kasemsan Siri | Solar array inverter with maximum power tracking |
KR100671788B1 (en) | 2005-03-18 | 2007-01-22 | 주식회사 다윈전자 | A Power Module Circuit |
US20060227472A1 (en) * | 2005-04-07 | 2006-10-12 | William Taylor | Inverter ground fault circuit |
WO2007022955A1 (en) | 2005-08-22 | 2007-03-01 | Conergy Ag | Solar cell |
JP4776348B2 (en) | 2005-11-11 | 2011-09-21 | シャープ株式会社 | Inverter device |
JP5401003B2 (en) | 2006-01-27 | 2014-01-29 | シャープ株式会社 | Solar power system |
US7456524B2 (en) * | 2006-03-31 | 2008-11-25 | American Power Conversion Corporation | Apparatus for and methods of polyphase power conversion |
US9172296B2 (en) | 2007-05-23 | 2015-10-27 | Advanced Energy Industries, Inc. | Common mode filter system and method for a solar power inverter |
CN100508327C (en) | 2007-06-08 | 2009-07-01 | 清华大学 | Photovoltaic three-phase grid control method for fast and steadily implementing maximal power tracing |
US8203069B2 (en) * | 2007-08-03 | 2012-06-19 | Advanced Energy Industries, Inc | System, method, and apparatus for coupling photovoltaic arrays |
US7768751B2 (en) * | 2008-01-29 | 2010-08-03 | Advanced Energy Industries, Inc. | System and method for ground fault detection and interruption |
US8294296B2 (en) | 2007-08-03 | 2012-10-23 | Advanced Energy Industries, Inc. | System, method, and apparatus for remotely coupling photovoltaic arrays |
US20090217964A1 (en) * | 2007-09-26 | 2009-09-03 | Advanced Energy Industries, Inc. | Device, system, and method for improving the efficiency of solar panels |
US20090078304A1 (en) * | 2007-09-26 | 2009-03-26 | Jack Arthur Gilmore | Photovoltaic charge abatement device, system, and method |
CA2737134C (en) * | 2007-10-15 | 2017-10-10 | Ampt, Llc | Systems for highly efficient solar power |
US7701081B2 (en) * | 2007-12-31 | 2010-04-20 | Advanced Energy Industries, Inc. | System, method and apparatus for providing direct current |
US7964837B2 (en) * | 2007-12-31 | 2011-06-21 | Advanced Energy Industries, Inc. | Photovoltaic inverter interface device, system, and method |
US7619200B1 (en) * | 2008-08-10 | 2009-11-17 | Advanced Energy Industries, Inc. | Device system and method for coupling multiple photovoltaic arrays |
US8461508B2 (en) | 2008-08-10 | 2013-06-11 | Advanced Energy Industries, Inc. | Device, system, and method for sectioning and coupling multiple photovoltaic strings |
US20100122758A1 (en) * | 2008-11-20 | 2010-05-20 | Shu-Ju Huang | Tire with foam portion and resilient portion |
US8362644B2 (en) | 2008-12-02 | 2013-01-29 | Advanced Energy Industries, Inc. | Device, system, and method for managing an application of power from photovoltaic arrays |
-
2008
- 2008-05-19 US US12/122,950 patent/US9172296B2/en active Active
- 2008-05-20 WO PCT/US2008/064263 patent/WO2008147776A1/en active Application Filing
- 2008-05-20 EP EP08769535A patent/EP2149184A1/en not_active Withdrawn
- 2008-05-20 CN CN200880016950A patent/CN101765955A/en active Pending
- 2008-05-20 KR KR1020097025699A patent/KR20100017730A/en not_active Application Discontinuation
- 2008-05-20 DE DE08769535T patent/DE08769535T1/en active Pending
- 2008-05-20 JP JP2010509503A patent/JP5313240B2/en not_active Expired - Fee Related
- 2008-05-22 TW TW097118856A patent/TW200908501A/en unknown
Non-Patent Citations (5)
Title |
---|
"IEEE Std. 519-1992", IEEE, 12 April 1993 (1993-04-12), XP017602661 * |
AHMED K.H. ET AL.: "Passive Filter Design for Three-Phase Inverter Interfacing in Distributed Generation", ELECTRICAL POWER QUALITY AND UTILISATION JOURNAL, vol. 13, no. 2, 2007, pages 1 - 9, XP031130773 * |
KIM J. ET AL.: "A Study on the Harmonic Elimination used Passive filter and Active Filter", PROCEEDINGS OF KIIEE, 2001, pages 77 - 83, XP008168822 * |
LEE W.-H.: "A Study on the Optimization of Input Filter for Switching Inverter", MASTER THESIS OF HANYANG UNIVERSITY, February 1989 (1989-02-01), XP008171205 * |
WANG T. ET AL.: "Output Filter Design for a Grid-interconnected Three-Phase Inverter", IEEE, 2003, pages 779 - 784, XP010648907 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10424935B2 (en) | 2009-09-15 | 2019-09-24 | Rajiv Kumar Varma | Multivariable modulator controller for power generation facility |
US11271405B2 (en) | 2009-09-15 | 2022-03-08 | Rajiv Kumar Varma | Multivariable modulator controller for power generation facility |
Also Published As
Publication number | Publication date |
---|---|
KR20100017730A (en) | 2010-02-16 |
JP5313240B2 (en) | 2013-10-09 |
CN101765955A (en) | 2010-06-30 |
DE08769535T1 (en) | 2010-08-26 |
US20080291706A1 (en) | 2008-11-27 |
EP2149184A1 (en) | 2010-02-03 |
US9172296B2 (en) | 2015-10-27 |
JP2010528577A (en) | 2010-08-19 |
TW200908501A (en) | 2009-02-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9172296B2 (en) | Common mode filter system and method for a solar power inverter | |
Calais et al. | Multilevel converters for single-phase grid connected photovoltaic systems: an overview | |
EP2740202B1 (en) | Transformerless multilevel converter | |
JP4322250B2 (en) | Transformer-less grid-connected power conversion circuit | |
AU2008302264B2 (en) | Current waveform construction to generate AC power with low harmonic distortion from localized energy sources | |
EP2882090A1 (en) | Single-phase fullbridge inverter with switchable output filter | |
Rahimi et al. | New topology to reduce leakage current in three-phase transformerless grid-connected photovoltaic inverters | |
Shi et al. | Design and implementation of a 100 kW SiC filter-less PV inverter with 5 kW/kg power density and 99.2% CEC efficiency | |
Figueredo et al. | Leakage current minimization techniques for single-phase transformerless grid-connected PV inverters—An overview | |
Ito et al. | Harmonic current reduction control for grid-connected PV generation systems | |
Rahimi et al. | Optimal placement of additional switch in the photovoltaic single-phase grid-connected transformerless full bridge inverter for reducing common mode leakage current | |
Madhusoodhanan et al. | Three-phase 4.16 kV medium voltage grid tied AC-DC converter based on 15 kV/40 a SiC IGBTs | |
CN102638047A (en) | Three-phase unified power quality control device with bypass switches | |
EP3394971A1 (en) | Grounding scheme for power conversion system | |
Saleh et al. | Solid-state transformers for distribution systems: Technology, performance, and challenges | |
CN101834532B (en) | High-voltage and high-power transducer | |
CN113726137B (en) | conversion device | |
Geetha et al. | H5-ZVR Single-Phase Grid-Tied Inverters for Photovoltaic Application | |
US10700597B1 (en) | Distribution transformer power flow controller | |
CN208690941U (en) | A kind of inverter and generating equipment | |
Srivastava et al. | Harmonic compensation of HVDC rectifier using shunt active filter | |
Figueredo et al. | Integrated common and differential mode filter applied to a single-phase transformerless PV microinverter with low leakage current | |
Onodera et al. | Fault-Ride-Through (FRT) Characteristics of a Power-Decoupling-Type Photoinverter System | |
Kangarlu et al. | Determination of the transformer turns ratio in a DVR to reduce the switches voltage rating | |
Encarnacao et al. | A case study of hybrid filter applications in power transmission systems |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200880016950.6 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08769535 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010509503 Country of ref document: JP Ref document number: 2008769535 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20097025699 Country of ref document: KR Kind code of ref document: A |